The basic objective of the paper was to show the link between family attachment and communication, and religiosity in the family as opposed to risk behaviour, which are grouped into three dimensions: apathy and distraction, skipping classes and consumption of psychoactive substances, and aggressive behaviour. There are two hypotheses that show that there is a negative correlation between family affiliation and communication, and risk behaviour, namely that students who have assessed family attachment and communication higher values also show less risk behaviours. The other hypothesis also presumes a negative correlation between family religiosity and risk behaviour, that is, that students who have assessed religiousness in the family as a higher value manifest less risk behaviours. The students of the "Mate Blazina" High School in Labin participated in the study (N= 202). The results were processed by descriptive statistics and Spearman correlation. According to basic research results, it is established that there is no correlation between family attachment and communication, and risk behaviour (apathy and distraction, and skipping classes and consumption of psychoactive substances), while there is also a low and negative correlation with risk behaviour: aggressiveness. As far as the other hypothesis is concerned, it is partially confirmed, given that the negative and moderate correlation between religiousness in the community and the risk behaviour is determined by apathy and distraction, whereas between the religiousness in the family and the risk behaviour – skipping classes and consumption of psychoactive substances – there is no correlation, and a positive and low correlation was determined between family religiosity and aggressive behaviour.